Lens holding member, focusing lens using lens holding...

Details Lens holding member, focusing lens using lens holding... Lens holding member, focusing lens using lens holding...

2005-09-01

2009-12-22

Edun, Muhammad N. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112010, C369S044230, C369S044140

Reexamination Certificate

active

07636292

ABSTRACT:
In a lens holding member for holding a solid immersion lens, when a difference-in-level portion and/or slant face is constructed at least on a part of the objective side surface, a tilt margin which can be applied to a near field optical recording and reproduction solid immersion lens can be maintained. In a focusing lens using such lens holding member, the optical pickup apparatus and the optical recording and reproducing apparatus, stable transportation between the lens and the optical recording medium can be improved.

REFERENCES:
patent: 5125750 (1992-06-01), Corle et al.
patent: 2002/0057645 (2002-05-01), Kishima
patent: 2003/0035361 (2003-02-01), Knight et al.
patent: 2006/0187773 (2006-08-01), Ishimoto

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